Android Question Startactivity problem in Android 5

[Juanll2003uy]

Hi, i have a project which have a main activity with buttons.
Each button use StartActivity to load another activity.
In Android 4.x all works fine.
But in Android 5.1 some buttons doenst work, when i call StartActivity i have a black window for a time, 1-2 minutes, then the activity called loads but the main activity finish :S

 

[Erel]

You need to post more information or upload the complete project (File - Export as zip).